feat: implement internationalization with multi-language support and runtime language selection

scripts/generate-langs.js

@@ -0,0 +1,33 @@
+const fs = require('fs');
+const path = require('path');
+
+const i18nDir = path.join(__dirname, '../src/i18n');
+const registryFile = path.join(__dirname, '../src/app/i18n-registry.ts');
+
+if (!fs.existsSync(i18nDir)) {
+	console.error(`i18n directory not found at ${i18nDir}`);
+	process.exit(1);
+}
+
+const files = fs.readdirSync(i18nDir).filter((file) => file.endsWith('.json'));
+
+let importStatements = '';
+let registryEntries = '';
+
+files.forEach((file) => {
+	const langCode = path.basename(file, '.json');
+	importStatements += `import ${langCode} from '../i18n/${file}';\n`;
+	registryEntries += `\t${langCode}: ${langCode} as AppTranslations,\n`;
+});
+
+const content = `// This file is auto-generated by scripts/generate-langs.js. Do not edit directly.
+import { AppTranslations } from './services/translation-service';
+${importStatements}
+export const translationsMap: Record<string, AppTranslations> = {
+${registryEntries}};
+
+export const availableLanguagesList: string[] = Object.keys(translationsMap);
+`;
+
+fs.writeFileSync(registryFile, content, 'utf8');
+console.log(`Successfully generated i18n registry at ${registryFile} with ${files.length} languages.`);